body,html,li,ul,h1,h2,h3,h4,h5,h6,p {
    padding: 0;
    margin: 0;
}

.mt-20 {
    margin-top: 20px;
}

.mb-0 {
    margin-bottom: 0;
}

.w-50 {
    width:50px;
}

.w-30 {
    width:30px;
}